SUBFAMILY ERIOCOCCINAE 135 



also groups of tricerores; anal setae slightly shorter than 

 anal ring setae. This statement of characters is based 

 upon the work of Ferris. One of my students who has 

 examined specimens of nipae and what we believe to be 

 pseudonipae has found characters showing these two spe- 

 cies to be not only well but easily differentiated species. — 

 British Guiana, Mexico, Massachusetts, Indiana, Michigan, 



California on Nipa, palms nipa Mask, 



ee. Body with five to six pairs of cerari present on five or six 

 caudal segments; anal cerari on indefinite chitinized area 

 bearing two or three slender auxiliary setae and few tri- 

 cerores; dorsal setae small and few in number; anal setae 

 subequal to anal ring setae. — Australia, New Zealand, 



Natal, California on Araucaria, Dammara 



aurilanatus Mask, 

 bb. Cerari other than the anal cerari, at least cephalic pair, always 

 with more than two ceraran setae. 



c. Body always with more than twelve pairs of cerari. 

 d. Body with cephalic six or seven pairs of cerari with each 

 cerarus with three or four ceraran setae; body with seven- 

 teen pairs of cerari; lateral cerari with three or four auxil- 

 iary setae; anal cerari borne on chitinized plate; dorsal setae 

 numerous and rather long; anal setae equal to or slightly 

 longer than anal ring setae. — Japan, New York, California on 



Mulberry, maple, Pinus. comstocki Kwn, 



id. Body with the cephalic three or four pairs and sixth pair of 

 cerari with each cerarus with three or four ceraran setae. 

 e. Anal cerari not borne by distinct more strongly chitinized 

 area. 



f. Cerari without auxiliary setae. 



g. Anal cerari with tricerores numerous, twenty-five or 

 more, immediately about their ceraran setae, 

 h. Body with fifteen to seventeen pairs of cerari, 

 cephalic two or three pairs of cerari with each 

 cerarus with three ceraran setae, other cerari 

 with two; tricerores about six in number about 

 lateral cerari, but few on body; anal setae and 

 anal ring setae subequal. — California on Cupres- 



sus. Thuja, Libocedrus, Sequoia ryani Coq. 



hh. Body with seventeen pairs of cerari, cephalic 

 four pairs of cerari with each cerarus with three 

 or four ceraran setae, other cerari with two; tri- 

 cerores about twelve to fifteen on cephalic and 

 caudal cerari, always more than six, fairly nu- 

 merous on the body; anal setae two-thirds length 

 of anal ring setae, latter distinctly longer than 

 diameter of anal ring; ventral surface of anal 

 lobes chitinized. — Illinois, Massachusetts on sor- 

 ghum, corn, nests of haalns. ..sorghiellus Forbei. 



